جامع الترمذي

Narrated Abu Buraidah: "The Messenger of Allah (ﷺ) awoke in the morning and called for Bilal, then said: 'O Bilal! By what have you preceded me to Paradise? I have not entered Paradise at all, except that I heard your footsteps before me. I entered Paradise last night, and I heard your footsteps before me, and I came upon a square palace having balconies made of gold. So I said: 'Whose palace is this?' They said: 'A man among the Arabs.' So I said: 'I am an Arab, whose palace is this?' They said: 'A man among the Quraish.' So I said: 'I am from the Quraish, whose palace is this?' They said: 'A man from the Ummah of Muhammad (ﷺ).' So I said: 'I am Muhammad, whose palace is this?' They said: ''Umar bin Al-Khattab's.' So Bilal said: 'O Allah's Messenger! I have never called the Adhan except that I prayed two Rak'ah, and I never committed Hadath except that I performed Wudu upon that, and I considered that I owed Allah two Rak'ah.' So the Messenger of Allah (ﷺ) said: 'For those two.'"